Top answers

How does sweat cool the body down? (2 marks)

Water in the sweat evaporates due to the body temperature of the organism - This takes heat with it
JM
Answered by Jigi M. • Biology tutor
9271 Views

How do humans and other mammals keep homeostasis of their body temperature?

Humans and other mammals keep their body temperature within just a few degrees of 37 degrees celcius. To achieve homeostasis of body temperature, three components are involved: a receptor, a co-ordinator, an...
RD
Answered by Rebecca D. • Biology tutor
9766 Views

In terms of ecological pyramids, how can pyramids of numbers sometimes be a different shape from pyramids of biomass, even for the same food chain?

Ecological pyramids are a way of visualizing a food chain, either with the mass of organisms or the total number of the population of organims at each stage of the food chain. Pyramids of biomass are always ...
RN
Answered by Robynne N. • Biology tutor
19220 Views

How do mitosis and meiosis have different outcomes?

The beginning of both of these cell activities are very similar with the 23 pairs (46) chromosomes replicating resulting in 2 sister chromatids. At this point when the spindle fibres attach is when the proce...
TP
Answered by Thomas P. • Biology tutor
2992 Views

What are the models for enzyme action and how to remember the differences?

The two models to explain the actions of enzymes with substrates are the Lock and Key model & Induced fit model. In lock and key the enzyme is the lock and the substrate is the key. As with a lock and th...
TP
Answered by Thomas P. • Biology tutor
49413 Views